ip route add blackhole 117.51.5.0/24
ip route add blackhole 117.51.4.0/24
ip route add blackhole 117.51.6.0/24
ip route add blackhole 117.51.130.0/24
ip route add blackhole 117.51.7.0/24
ip route add blackhole 117.51.2.0/24
ip route add blackhole 117.51.1.0/24
ip route add blackhole 117.51.0.0/24
ip route add blackhole 117.51.0.0/17
ip route add blackhole 117.51.3.0/24